S R F    2 0 0 3

SRF2003 Show Abstract


Title Superconducting RF Activities at Michigan State University
Type Poster laboratory reports
Abstract In the year 2000, the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University (MSU) initiated a program in superconducting radio frequency (SRF) research and development.  All of the infrastructure needed for SRF research is now available at or near MSU.  Presses (>800 tons) are available locally for deep drawing of niobium.  Niobium parts are machined at NSCL.  Electron beam welding is done in Chicago.  Chemical etching, high pressure rinsing, clean room assembly, and cryogenic RF testing are done at NSCL.  One SRF application of interest at NSCL is the proposed Rare Isotope Accelerator (RIA).  The RIA driver linac is to accelerate stable isotopes (protons through uranium) to energies >400 MeV per nucleon (beta = v/c > 0.72) with beam powers up to 400 kW.  To obtain these intensities, partially stripped ions are accelerated through 1400 MV in the SRF linac.  A 10th-harmonic linac (80.5 MHz base frequency) requires six cavity types.  The first and last cavity types were developed for other linacs (INFN Legnaro and SNS, respectively), and the other four are variants of these two.  A half-wave resonator (optimum beta = 0.285) and a six-cell elliptical cavity (optimum beta = 0.49) were successfully prototyped in 2002.  Recent work on quarter-wave resonators (optimum beta = 0.085 and 0.16) is reported separately.  A cryomodule for the RIA cavities and focussing elements has been designed.  A first systems test with two elliptical cavities will be done in 2004.  A second cryomodule with drift-tube cavities and superconducting solenoids will be tested later in 2004.

List of authors...

Principle author first.

Last (Family) Name First Name (Initials only) Affiliation or Organization (abbreviations if possible)
Grimm T. Michigan State University
Andreev V. Michigan State University
Bierwagen J. Michigan State University
Bricker S. Michigan State University
Compton C. Michigan State University
Gorelov D. Michigan State University
Hartung W. Michigan State University
Johnson M. Michigan State University
Marti F. Michigan State University
Schriber S. Michigan State University
Wu X. Michigan State University
York R. Michigan State University
Zhao Q. Michigan State University



SRF 2003Webmaster